Hyundai Elantra AD Quiz
Brake System

Specifications

In this manual: Brake System
General Information — 9Engine Mechanical System — 84Engine Electrical System — 60Emission Control System — 24Engine Control System/Fuel System — 90Automatic Transmission — 92Drive Shaft and Axle — 20Suspension System — 31Steering — 20Restraints — 50Brake System — 63Body (Interior and Exterior) — 214Body Electrical System — 221Heating, Ventilation, and Air Conditioning — 71
~4min read

Specifications

Item Specification
Master Cylinder Type Tandem
Cylinder Inner Diameter 22.22 mm
Piston Stroke 45 ± 1 mm (1.77 ± 0.039 in.)
Fluid Level Sensor Provided
Brake booster Type 10-inch Single
Booster Ratio 8,0 : 1
Front Disc Brake Type Ventilated Disc
Rear Disc Ø 280 mm (11.02 in.)
Disc Thickness 23 mm (0.91 in.)
Caliper Piston Single
Cylinder Inner Diameter Ø 57.2 mm (2.25 in.)
Rear Disc Brake Type Solid Disc
Rear Disc Ø 262 mm (10.31 in.)
Disc Thickness 10 mm (0.39 in.)
Caliper Piston Single
Cylinder Inner Diameter Ø 33.96 mm (1.34 in.)
Rear Drum Brake Type Leading Trailing
Drum ID Ø 203.2 mm (8 in.)
Lining Thickness 4.2 mm (0.17 in.)
Clearance Adjustment Automatic
Parking Brake Type BIR (Ball in Ramp)
Activation Lever

Specifications (ABS)
Part Item Standard Value NOTE
HECU System 4-Channel 4-Sensor (Solenoid)
Type Motor, Integrated Valve Relay Type
Operating Voltage 8 ~ 16 V
Operating Temperature -40 ~ 120 °C
Engine Power 195 W
Active Wheel Speed Sensor (ABS) Supply Voltage 4.5 ~ 20 V DC
Low Output Current 5.9 ~ 8.4 mA
High Output Current 11.8 ~ 16.8 mA
Output range 1 ~ 2500 Hz
Tone wheel Front: 46 teeth, Rear: 47 teeth
Air gap 0.4 ~ 1.0 mm

Specifications (ESP)
Part Item Standard Value NOTE
HECU System 4-Channel 4-Sensor (Solenoid) Full control
(ABS, EBD, TCS, ESP)
Type Motor, Integrated Valve Relay Type
Operating Voltage 8 ~ 16 V
Operating Temperature -40 ~ 120 °C
Engine Power 290 W
Active wheel speed sensor Supply Voltage 4.5 ~ 20 V DC
Low Output Current 5.9 ~ 8.4 mA
High Output Current 11.8 ~ 16.8 mA
Output range 1 ~ 2500 Hz
Tone wheel Front: 46 teeth, Rear: 47 teeth
Air gap 0.4 ~ 1.0 mm

Service Standards
Items Standard Value
Brake pedal height 182 mm (7.17 in.)
Brake pedal full travel 135 mm (5.31 in.)
Stop light switch clearance 1.0 ~ 2.0 mm (0.04 ~ 0.08 in.)
Brake pedal free play 2 ~ 4 mm (0.08 ~ 0.16 in.)
Front brake disc thickness 23 mm (0.90 in.)
Front brake disc minimum thickness 21.4 mm (0.84 in.)
Front brake pad thickness 11 mm (0.43 in.)
Front brake pad wear limit 2.0 mm (0.78 in.)
Rear brake disc thickness 10 mm (0.39 in.)
Rear brake disc minimum thickness 8.4 mm (0.33 in.)
Rear brake pad thickness 10 mm (0.39 in.)
Rear brake pad wear limit 2.0 mm (0.78 in.)
Rear drum brake lining thickness 4.2 mm (0.17 in.)
Rear drum brake lining wear limit 1.0 mm (0.04 in.)

Tightening torque

Items N·m kgf·m lb-ft
Master cylinder to brake booster 12,7 ~ 16,7 1,3 ~ 1,7 9,4 ~ 12,3
Brake booster mounting nuts 16,7 ~ 25,5 1,7 ~ 2,6 12,3 ~ 18,8
Bleeder screw 6,9 ~ 12,7 0,7 ~ 1,3 5,1 ~ 9,4
Brake tube flare nuts 12,7 ~ 16,7 1,3 ~ 1,7 9,4 ~ 12,3
Front caliper guide rod bolts 21,6 ~ 31,4 2,2 ~ 3,2 15,9 ~ 23,1
Rear caliper guide rod bolts 21,6 ~ 31,4 2,2 ~ 3,2 15,9 ~ 23,1
Front caliper assembly to steering knuckle 78,5 ~ 98,1 8,0 ~ 10,0 57,9 ~ 72,3
Rear caliper assembly to steering knuckle 63,7 ~ 73,5 6,5 ~ 7,5 47,0 ~ 54,2
Brake hose to caliper 24,5 ~ 29,4 2,5 ~ 3,0 18,1 ~ 21,7
Brake pedal bracket bolts 16,7 ~ 25,5 1,7 ~ 2,6 12,3 ~ 18,8
Wheel speed sensor mounting bolt 7,8 ~ 11,8 0,8 ~ 1,2 5,8 ~ 8,7
HECU bracket mounting and nut 16,7 ~ 25,5 1,7 ~ 2,6 12,3 ~ 18,8

Lubricants
Items Recommended Quantity
Brake fluid DOT 3 or DOT 4 As required
Brake pedal bushing and bolt Chassis grease As required
Parking brake shoe and backing plate contact surface Heat-resistant grease As required

Test yourself

A quick Hyundai Elantra AD quiz: every answer comes with an explanation and a link to the manual page.